Heating system for automobiles and coupling therefor



Oct. 6, 1931. 1,826,169

HEATING SYSTEM FOR AUTOMOBILES AND COUPLING THEREFOR J. S. DOUGLASS, JR

Filed Sept. 24, 1928 2 Sheets-Sheei [LL l/l md m "U! I I m e a m Oct. 6,1931.

HEATING SYSTEM FOR AUTOMOBILES AND COUPLING THEREFOR Filed Sept. 24,1928 2 Sheets-Sheei 2 Llox 4 5O Inventor T/ames 5, 00 ug /oss,r n k Itomey J. s. DOUGLASS, JR 1,826,169

Patented. Oct. 6, 1931 JAMES S. DOUGLASS, JR., OE CANANDAIGUA. NEW YORKirna'rine SYSTEM. r012. AUTOMOBILES AND oournme TfiEREFOR Applicationfiled September 24, 1928. Serial No. 307,802.

This invention relates to steam heating system in which the waste heatfrom the exhaust gases of the internal combustion engine in combinationwith water from the cooling system of the engine is utilized to generatesuperheated steam which then passed through suitable radiators to heatthe inside of the automobile and the object of this invention is toreduce such a heating 10 system to its simplest form in which it willoperate efficiently.

Another object of the invention is to provide attachments by which theconnections between the steam heating devices and the l exhaust pipe onthe engine of the automobile can be easily and cheaply made.

These and other objects of the invention will be fully illustrated inthe drawings described in the specification and pointed out in theclaims at the end thereof.

In the drawings:

Figure 1 is a diagrammatic side elevation of a portion of an automobileillustrating the application of my steam heating system thereto.

Figure 2 is an enlarged longitudinal sectional view of the steamgenerator of my heating system and the connections by which it ismounted in the exhaust pipe of the engine.

Figure 3 is a. vertical section on the line 3%, 3w oPFigui-e 2.

Figure 4 is a top plan view of F gure 2. Figure 5 is a bottom plan viewof Figure 2. Figure .6 is a top plan view of a modification of Figure 2showing one inlet watertube and two outlet steam tubes, each of which isadapted to feed a separate radiator. Figure 7 is a vertical longitudinalsection corresponding to Figure 2 showing a modified form of one of thesteam tubes.

Figure 8 is a transverse section on the line 800, 8a; of Figure 7 Figure9 is a vertical longitudinal section corresponding to Fig. 2 showing oneinlet water tube and four outlet steam tubes.

Figure 10 is a vertical section on the line 9411, 9a: of Figure 9. Inthe drawings indicate like parts.

like reference numerals The heating system forming the subiect matter ofthis invention takes water from the water circulating system of the car,

changes it into superheated steam by using the heat of the exhaust gasesof the automobile engine of the car. This superheated steam is thenpassed through one or more radiators in the car for the purpose ofheating the car.

densed into water by the radiators and this water is then returned tothe circulating system from the car.

of the car so that no water is lost The water is thus used over and overagain both for cooling the engine and for heating the car and it is usedw waste.

ithout As shown in Figure 1, Water is drawn by art of the pipe 1 fromthe pipe 2 which is p the water circulating system of the car. Water isforced into the pipe 2 under sure by car. The pipe 1 The presthe watercirculating pump of the first leads up to the dash where it connectswith a valve 1A which con- This valve is preferably a needle valve. Byopentrols the flow of water through it.

ing this valve aslight amount, only a small amount of water. will passand this will make heated. Tithe valve is open wide a superheated steamby which the car will be large amount of water will pass which will beheated and will pass through the radiator not as steam but as water toheat the car.

From this valve 1A the water flows through the pipe down 1. The heaterdescribed herein is either a steam or hot water heater depending on thesetting of the valve the dash. One side of the U 3 is mounted in theexhaust ma of the engine,

1A on shaped tube nifold where it is subjected to a high temperature ofthe exhaust gases of the engine. 3 is connected to a pipe l'which leadsThe other side of the U shaped tube to one or more radiators in the car,to which radiators superheated steam is supplied for the purpose ofheating the car.

The U shaped tube 3 is mounted in the saddle block 5 shown in Figure 2.

The exhaust pipe is provided with a large hole or opening 6 therein andis big enough to permit the insertion of the U shape d tube Thesuperheated steam is con- 3. Between the block 5 and the exhaust. pipe 7a strip of asbestos or other suitable packing material 8 is provided bywhich the joint between the block 5 and the opening in the exhaust pipe7 may be securely sealed. A washer 9 is plaeed'on the pipes 1 and 4. Thecap 10 makes threaded engagement with the block 5 and screws down on itcarrying the washer 9 with it. The pipes 1 and 4 are connected to theends of the U by enlarged joints and these joints are clamped betweenthe washer 9 and block 5. thus securely holding the pipes in place.

The block 5 is provided on each side with the extensions 11. 12. 13 and14 which form an integral part therewith and are used for 'the purposeof clamping the block to the exhaust pipe as will now he described.

Passing under the exhaust pipe is the strap 15 which mav be made in onepiece but is preferahlv made in 2 pieces to provide for adjustment. Ifthe strap were made in one piece, straps of different lengths would haveto he used to fit different sizes of exhaust pipes. The ends of thisstrap are provided with the studs 16 and 17 which pass through the slots18 and 19 that are formed between the extensions 11 and 12 on one sideand extensions 13 and 14 on the other side. The nuts 20 and 21 areprovided on the studs 16 and 17 by Which the studs and the strap mav bedrawn up against the lower side of the pipe and the block 5 may be drawndown on the top of the pipe thus securelv closing the opening 6 in thepipe. Instead of making the strap 15 all in one piece I preferahlv makeit in two pieces as shown in side elevation in Figure 3 and as shown inbottom plan view as shown in Figure 5. The part 15A is provided with anarrow tongue 22 which engages in one or the other of the series ofslots 23 formed in the part 15B. 13v setting this tongue 22 in the slotforward or back and bending the tongue over, the strap can be lengthenedor shortened as may he desired and the two parts thereof may he securelyfastened together. When the two parts are thus fastened the strap is putin place as shown in Fig. 3. the nuts may he turned drawing the strapand the block securely against the pipe and holding the pipes 1. 4 andthe tube 3 firmlv in place with relation to the exhaust pipe of theengine.

Washers 24: and 25 are placed under the nut 20 and 21 as are shown inFigure 3.

As I have shown in Figures 2. 3 and 4 a single U sha'ped tube is usedtherein and this pipe works very well for the purpose of heating asingle radiator. but if this tube is connected up to supply steam to tworadiators so that the steam is divided between them. it has been foundin practice that one radiator will get more steam than the other andthat the different parts of the car will be unequally heated.

To overcome this objection I provide in the exhaust manifold a singleinlet water tube 30 and two outlet steam tubes 31 and 32 as shown inFigure 6. In such case the tubes 30, 31 and 32 are all connected to athimble 33 into which all the tubes open with the tube 30 between thetubes 31 and 32. The water and steam will flow equally from-the inlettube 30 to the outlet tubes 31 and 32.

In Figures 7 and 8 I have shown the same kind of connection in which theU shaped tube is made of a flat tube having a rectangular cross section,it having been found that the tube can be bent upon itself and made morecompact by installing it in this way. If desired a large tube ofrectangular section can be used such as indicated at 34 and a partition35 can be run down through the tube. The lower end of the tube will beclosed with a cap. The water will pass down one side of the partition 35and the steam will pass up on the other side of the partition.

In Figure 9 I have shown one inlet water tube and four outlet steamtubes, the inlet water tube being the central tube as is indicated bythe reference numeral 40 and the outlet tubes 41 are arranged around itso as to receive steam therefrom equally. In this case five tubes wouldbe used as shown in the cross section of Figure 10.

In some cases the end of the heating tube will vibrate in the exhaustpipe and is therefore apt to make a noise. To prevent this the exhaustpipe 7 is perforated with a suitable hole and a hook 50 is passed intothe hole and engaged with the heating tube. The lower end of the hook isthreaded and a nut 51 is screwed up thereon to pull the hook and tubedown into engagement with the pipe and hold it there.

I claim:

1. A coupling for a heating system comprising an exhaust pipe having alarge hole therein, an aperturedblock adapted to cover said hole. forkextensions on each side of said block having an opening between them, astrap adapted to pass under the pipe opposite to said hole, said straphaving a stud on each end thereof, nuts engaging with said stud bywhich-the block and strap are drawn close against the exhaust pipe, theblock closing the large opening in the pipe two open ings in said block,a U shaped pipe extending through said openings, packing material on topof said block surrounding said U shaped pipe. a washer having two holesin it on top of said packing material, a ring cap threaded to said blockand adapted to squeeze the packing material between the washer and theblock and seal the joint between the block and the U shaped pipe.

2. A coupling for a heating system comprising an exhaust pipe having alarge hole therein, an apertured block adapted to cover said hole, forkextensions on each side of said block having an opening between them,

a strap adapted to pass under the'pipe opposite to said hole, said straphaving a stud on each end thereof, nuts engaging with said stud by whichthe block and strap are drawn close against the exhaust pipe, the blockclosing the large opening in the pipe, a water tube and steam tubepassing through said .block and making close engagement therewith, saidtubes extending into and lengthwise of the exhaust pipe and beingconnected together in the exhaust pipe so that water flows into saidtubes on one side and steam flows out of the tube on the other side.

3. A coupling for a heating system comprising an exhaust pipe having alarge hole therein, a block adapted to cover said hole, fork extensionson each side of said block having an opening between them, a strapadapted to pass under the pipe opposite to said hole, said strap havinga stud on each end thereof, nuts engaging with said stud by which theblock and strap are drawn close against the exhaust pipe, the blockclosing the large opening in the pipe, said strap being made in twoparts one part of the strap being finished on its end with a narrowtongue and the other part of the strap having a plurality of openingstherein, said tongue being adapted to pass through any one of saidopenings and being adapted to be bent over to lock the two parts of thestrap together.

4. The combination of an exhaust pipe having a hole therein, a tubepassing into said pipe through said hole and being bent on it-- selfinside of the pipe and passing out again from said pipe through saidsame hole, a clamp adapted to hold the ingoing and outcoming ends ofsaid tube in said hole and close the hole between the tube and the pipe,the ends of the tube being exposed outside of the pipe for the purposeof making conneotions therewith.

5. The combination of an exhaust pipe having a hole in the side thereof,a tube passing into said pipe and out again through said hole, said tubehaving a U-shaped portion Within the pipe extending substantiallyparallel to the axis of the pipe, the free ends of said tube being bentat right angles to the U-shaped portion, both of said free ends passingout of said pipe through said hole,

a clamp adapted to hold the free ends of said hole and close the holebetween the free ends of the tube and the pipe, connections outside ofsaid pipe with the free ends of said tube whereby liquid may becirculated through said tube and be heated by the exhaust gases.

In testimony whereof I afiix my si nature.

JAMES s. noUoLAss, JR.

